CA1274869A - Hot gunning robot for furnace lining - Google Patents
Hot gunning robot for furnace liningInfo
- Publication number
- CA1274869A CA1274869A CA000527418A CA527418A CA1274869A CA 1274869 A CA1274869 A CA 1274869A CA 000527418 A CA000527418 A CA 000527418A CA 527418 A CA527418 A CA 527418A CA 1274869 A CA1274869 A CA 1274869A
- Authority
- CA
- Canada
- Prior art keywords
- nozzle
- gunning
- feeding pipe
- furnace
- robot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
- F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Robotics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Spray Control Apparatus (AREA)
Abstract
HOT GUNNING ROBOT FOR FURNACE LINING
ABSTRACT
During refining of scrap, a lining on the wall or the bottom of a furnace is eroded by high temper-ature molten steel and slag. Sludgy lining material is spouted toward the worn lining by a hot gunning robot. The lining material is solidified under the high temperature condition immediately after the tap-ping and the furnace lining is mended. The hot gunning robot moves a gunning nozzle along a verti-cal center line of the furnace and changes the tilt-ing angle of the gunning nozzle to perform mending of the required portions continuously and automati-cally. The hot gunning robot comprises a gunning nozzle, a shifter and a nozzle carrier. The shifter transfers the nozzle carrier from a housing position to a mending position of the furnace and consists of parallelogram-links and an actuator which moves the links. The nozzle carrier travels in an upright posture, and not only the furnace wall but also the furnace bottom is mended by the rotating and tilt-ing of the gunning nozzle. A water feeding tube is fitted on a vertical feeding pipe which feeds the lining material and homogeneous sludgy lining material is obtained by mixing the lining material powder with water spouted through a mouthpiece.
The sludgy lining material is introduced into the gunning nozzle smoothly by guide vanes provided in a cylindrical nozzle supporter. The nozzle carrier is partitioned into a driving chamber and an air chamber and both of chambers are cooled by feeding air. A driving system and a bearing system for the vertical feeding pipe is protected from the heat of the furnace. Swinging of the long vertical feeding pipe is prevented by a stabilizer.
ABSTRACT
During refining of scrap, a lining on the wall or the bottom of a furnace is eroded by high temper-ature molten steel and slag. Sludgy lining material is spouted toward the worn lining by a hot gunning robot. The lining material is solidified under the high temperature condition immediately after the tap-ping and the furnace lining is mended. The hot gunning robot moves a gunning nozzle along a verti-cal center line of the furnace and changes the tilt-ing angle of the gunning nozzle to perform mending of the required portions continuously and automati-cally. The hot gunning robot comprises a gunning nozzle, a shifter and a nozzle carrier. The shifter transfers the nozzle carrier from a housing position to a mending position of the furnace and consists of parallelogram-links and an actuator which moves the links. The nozzle carrier travels in an upright posture, and not only the furnace wall but also the furnace bottom is mended by the rotating and tilt-ing of the gunning nozzle. A water feeding tube is fitted on a vertical feeding pipe which feeds the lining material and homogeneous sludgy lining material is obtained by mixing the lining material powder with water spouted through a mouthpiece.
The sludgy lining material is introduced into the gunning nozzle smoothly by guide vanes provided in a cylindrical nozzle supporter. The nozzle carrier is partitioned into a driving chamber and an air chamber and both of chambers are cooled by feeding air. A driving system and a bearing system for the vertical feeding pipe is protected from the heat of the furnace. Swinging of the long vertical feeding pipe is prevented by a stabilizer.
Description
~7~84~9 The present invention relates to a hot yunning robot which mends an eroded furnace :Lining con-tinuously and automa-tically by spouting sludgy lining material while a gunning nozzle is traveling vertically along the center line of an electric furnace.
Refining of scrap charged into an electric furnace is performed by arcs generated from electrodes. A lining on a wall or a bottom of a furnace is eroded by high temperature molten steel and slag during the melting process. The worn lining is mended by spouting sludgy lining material under the high temperature condition immediately after the taping. In order to spout lining material, a worker must insert a gunning nozzle attached to a long lance through a side opening of a furnace. In this way, heavy labor in very severe operating condition at a high temperature is forced upon the workers. Moreover, it is not easy to mend the wide range of the lining and much more skillful technique is required.
The first object of the present invention is to facilitate:
housing a hot gunning robot compactly close by an electric furnace;
traveling a gunning nozzle vertically along the center line of an electric furnace and rotating around the center line;
changing remotely the angle of the ti.lt oi the - gunning nozzle when lining material is spouted therefrom;
and as a result, mending the furnace lining under the hot condition quickly, continuously and automatically.
The second object of the present invention is to facilitate relieving choking of the sludgy lining material in the gunning nozzle and wearing on the wall of the pathes.
~27~86~
The third object of the present invention is to facilitate:
obtaining homogeneous sludyy lining material by mixing water with lining material uniformly;
protecting vertical feeding pipe for lining material from the heat of a furnace;
avoiding choking by removing sludgy lining material remaining in the gunning nozzle.
The fourth object of the present invention is avoiding uncontrolled swinging of the gunning nozzle and of a vertical feeding pipe and stabilizing and operating the hot gunning robot and hence facilitating accurate mending predetermined portions of the linlng.
The fifth object of the present invention is preventing heat of the furnace from influencing directly the driving system and the bearing system of the vertical feeding pipe.
These and other related objects of this invention are achieved by providing:
a shifting arm to which a nozzle carrier is ~0 attached;
parallelogram links which move said shifting arm in a constant orientation;
a vertical feeding pipe which rotates horizontally in said nozzle carrier and feeds lining material;
a cylindrical nozzle supporter with an inlet port communicated with the lower end of said vertical feeding pipe;
and a gunning nozzle which can be tilted and has a nozzle base fitted on said cylindrical nozzle supporter.
A hot gunning machine has been used in order to release workers from the direct operation of the long lance which is hard to handle. The hot gunning machine comprises a main ~:7~6~
pole disposed close by an electric furnace and a shiftiny arm which travels vertically alony and rotates around the main pole and a nozzle carrier which is equipped on the shifting arm. An exchangeable yunning nozzle is attached to the lower end of the nozzle carrier and the nozzle carrier travels vertically along the center line of the furnace. Therefore, the gunning nozzle can be transferred from the housing position shown by single-dot chain lines to the advanced position over the furnace shown by solid lines and then to the gunning position shown by double-dot chain lines. After the gunning nozzle is rotated toward the required direction as shown by an arrow, lining material from a pneumatic transport hose is spouted to mend the worn lining 3a. To mend the lining on the bottom of the furnace, the gunning nozzle is retreated to the housing position and is exchanged for a gunning nozzle which has a suitable angle for gunning toward the bottom of the furnace.
The hot gunning machine described above facilitates mechanical and remote operation under the high temperature ~0 conditions and reduces the burden of the workers. Moreover, as the nozzle carrier can travel along the vertical center line of the furnace in an upright posture, when uniform mending over the inside of the furnace is required, it can be carried out easily by rotating the gunning nozzle.
However, there are difficulties as follows:
(1) When an electric furnace is large, -the shifting arm has to be long. In order to rotate the shifting arm in the circumference of the furnace, a large space must be maintained in a building where the electric furnace is installed.
Refining of scrap charged into an electric furnace is performed by arcs generated from electrodes. A lining on a wall or a bottom of a furnace is eroded by high temperature molten steel and slag during the melting process. The worn lining is mended by spouting sludgy lining material under the high temperature condition immediately after the taping. In order to spout lining material, a worker must insert a gunning nozzle attached to a long lance through a side opening of a furnace. In this way, heavy labor in very severe operating condition at a high temperature is forced upon the workers. Moreover, it is not easy to mend the wide range of the lining and much more skillful technique is required.
The first object of the present invention is to facilitate:
housing a hot gunning robot compactly close by an electric furnace;
traveling a gunning nozzle vertically along the center line of an electric furnace and rotating around the center line;
changing remotely the angle of the ti.lt oi the - gunning nozzle when lining material is spouted therefrom;
and as a result, mending the furnace lining under the hot condition quickly, continuously and automatically.
The second object of the present invention is to facilitate relieving choking of the sludgy lining material in the gunning nozzle and wearing on the wall of the pathes.
~27~86~
The third object of the present invention is to facilitate:
obtaining homogeneous sludyy lining material by mixing water with lining material uniformly;
protecting vertical feeding pipe for lining material from the heat of a furnace;
avoiding choking by removing sludgy lining material remaining in the gunning nozzle.
The fourth object of the present invention is avoiding uncontrolled swinging of the gunning nozzle and of a vertical feeding pipe and stabilizing and operating the hot gunning robot and hence facilitating accurate mending predetermined portions of the linlng.
The fifth object of the present invention is preventing heat of the furnace from influencing directly the driving system and the bearing system of the vertical feeding pipe.
These and other related objects of this invention are achieved by providing:
a shifting arm to which a nozzle carrier is ~0 attached;
parallelogram links which move said shifting arm in a constant orientation;
a vertical feeding pipe which rotates horizontally in said nozzle carrier and feeds lining material;
a cylindrical nozzle supporter with an inlet port communicated with the lower end of said vertical feeding pipe;
and a gunning nozzle which can be tilted and has a nozzle base fitted on said cylindrical nozzle supporter.
A hot gunning machine has been used in order to release workers from the direct operation of the long lance which is hard to handle. The hot gunning machine comprises a main ~:7~6~
pole disposed close by an electric furnace and a shiftiny arm which travels vertically alony and rotates around the main pole and a nozzle carrier which is equipped on the shifting arm. An exchangeable yunning nozzle is attached to the lower end of the nozzle carrier and the nozzle carrier travels vertically along the center line of the furnace. Therefore, the gunning nozzle can be transferred from the housing position shown by single-dot chain lines to the advanced position over the furnace shown by solid lines and then to the gunning position shown by double-dot chain lines. After the gunning nozzle is rotated toward the required direction as shown by an arrow, lining material from a pneumatic transport hose is spouted to mend the worn lining 3a. To mend the lining on the bottom of the furnace, the gunning nozzle is retreated to the housing position and is exchanged for a gunning nozzle which has a suitable angle for gunning toward the bottom of the furnace.
The hot gunning machine described above facilitates mechanical and remote operation under the high temperature ~0 conditions and reduces the burden of the workers. Moreover, as the nozzle carrier can travel along the vertical center line of the furnace in an upright posture, when uniform mending over the inside of the furnace is required, it can be carried out easily by rotating the gunning nozzle.
However, there are difficulties as follows:
(1) When an electric furnace is large, -the shifting arm has to be long. In order to rotate the shifting arm in the circumference of the furnace, a large space must be maintained in a building where the electric furnace is installed.
(2) The machine is bulky in the housingposition and occupies a wide area so that the installation 8~
of other lncidental equipments becomes restrictive.
of other lncidental equipments becomes restrictive.
(3) The gunning nozzle has to be exchanged in accordance with the portion to be mended.
Therefore, a lot of manpower and time for the exchanging nozzle are necessary.
In order to solve the problems of the exchanging for the gunning nozzles, for instance a swivel joint may be used for supporting the gunning nozzle. A swivel joint is attached to the lower end of the nozzle carrier to facilitate tilting of the gunning nozzle. The swivel joint has a swivel axis and a horizontal path is formed in a swivel shaft.
The sludgy lining material passes through from a vertical path to the horizontal path and to a tilted path. However, as the lining material has to pass through two sharp bends, pressure loss becomes large and walls of the pa~nes heavily worn by the lining material. Moreover, the sludgy lining material stagnates at the bends and choking in the pathes causes.
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration, a preferred embodiment thereof, and in which:
Figure 1 is a diagrammatic illustration showing a hot gunning robot of the present invention installed close by an electric furnace;
Figure 2 is a sectional view of the upper half of a nozzle carrier;
Figure 3 is a sectional view of the lower half of a nozzle carrier;
Figure 4 is a sectional view of -the lower end of , ~7~
the nozzle carrier and of a gunniny nozzlei Figure 5 is a sectional view of an articular joint wi-th a movable guide vane;
Figure 6 is a developed sectional view of a mouth piece of the E-E section in Figure 4;
Figure 7 is a sectional development of a mouth piece having tangential injection holes;
Figure 8 is a sectional view of the F-F section in Figure 3;
Figure g is a sectional view of the G-G section in Figure 3;
Figure 10 is a sectional view of the H-H section in Figure 3;
Figure 11 is a sectional view of the K-K section in Figure 10;
Figure 12 is a diagrammatic illustration of a cooling air system;
Figure 13 is a diagrammatic illustration of the hot gunning robot in the housing position;
Figure 14 is a sectional view of an a~ticular-joint when the gunning n~zzle is tilted downward;
Figure 15 is an illustration of stagnating of sludgy li.ning material which may occur if the base of a nozzle casing is not swollen out;
Figure 16 is a development of the M-M section in Figure 14;
Figure 17 is a diagrammatic illustration of a hot gunning machine of the prior art; and -` ~27~
Figure 18 is a sectional view of a swi~el joint.
A hot gunning robot 1 shown in Figure 1 briefly comprises:
a gunning nozzle 2 which spouts lining material toward a furnace lining;
a shifter 4 which makes the gunning nozzle 2 advance into and retreat from an electric furnace 3; and a nozzle carrier 6 attached to the tip of the shifting arm 5 which is a part of the shifter 4.
The shifter 4 transfers the gunning nozzle 2 from a housing position to a mending position and consists of parallelogram links 7 and a hydraulic actuator 8 therefor.
The base of the hydraulic actuator 8 is attached to a mainpole 9 disposed close by the electric furnace 3. The parallelogram links 7 consist of two links lOA and lOB, a bending part 9a formed at the tip of the mainpole 9 and the shifting arm 5. The links lOA and lOB are supported on fulcra 11 and 12 provided at both ends of the bending part 9a and fulcra 13 and 14 provided on the shifting arm 5 which is parallel to the bending part 9a. The link lOA is connected to a piston rod 8a so as to make pitching in accordance with the extension and contraction of the h~draulic actuator 8.
When the link lOA pitches, the shifting arm 5 of the parallelogram links 7 are moved keeping parallel to the inclination of the bending part 9a.
The nozzle carrier 6, whlch maintains an upright posture, is attached to the tip of the shifting arm 5. The nozzle carrier 6 is, for instance, a box structure as shown in Figures 2 and 3 and a water jacket 15 is provided all around in order to protect from radiant heat of the furnace during the mending operation. A vertical feeding pipe 16 is provided inside the water jacket 15 to feed lining material 7~ 9 powder. At the lower end of the ver-tical feeding pipe 16, the freely tilted gunniny nozzle 2 is attached as shown in Figure 4.
The nozzle carrier 6 is partitioned by a base plate 17, and the upper part of the nozzle carrier 6 forms a driving chamber 6A and the lower part an air chamber 6B.
The air chamber 6B is provided in order to prevent the heat of the furnace from influencing a driving system and a bearing system for rotating the long vertical feeding pipe 16.
The vertical feeding pipe 16 is connected with a pneumatic transport pipe 20 through a rotary joint 19 in the upper part of the driving chamber 6A and is held vertically by two bearings 18A and 18B. A water feeding pipe 21 and outer barreled shaft 22 are fitted doubly on the vertical feeding pipe 16 and a spur gear 23 is fixed to the outer barreled shaft 22. Another spur gear 27 is fixed to a driving shaft 26 driven by amotor 25 with a reducer 24.
The spur gears 23 and 27 are engaged with each other so that the vertical feeding pipe 16 can be rotated.
At the lower end of the vertical feeding pipe 16, an articular joint 28, which introduces the lining material into the ~unning nozzle 2 smoothly, is formed. In detail, a cylindrical nozzle supporter 28A with an inlet port 29 is communicated with the lower end of the vertical feeding pipe 16 as shown in Figure 4. A cylindrical nozzle base 2A
is fitted on the nozzle supporter 28A so as to facilitate tilting of the gunning nozzle 2. The articular joint 28 mentioned above consists of the nozzle supporter 28A and the nozzle base 2A. The nozzle supporter 28A has a wide angle outlet port 30 which feeds the sludgy lining material to the gunning nozzle 2.
~.~7~
The communication of the gunning nozzle 2 ~ith the vertical feeding pipe 16 is kept at any -tilting angle of the gunning nozzle 2. There are arc-shaped guide vanes 31 and 32 between the outlet port 30 and the inlet port 29. The nozzle casing 2B is swollen out and opened near the nozzle base 2A as same as the outlet port 30 in order to prevent the sludgy lining material from choking near the lower end of -the guide vane 31. A hole 33 is provided in the nozzle base 2A
so that the gunning nozzle 2 tllts without interfering with the vertical feeding pipe 16. In the example shown in Figure 5, the guide vane 34 is hinged near the inlet port 29.
The lower end of the guide vane 34 contacts with a projection 35 of the no~e casing 2B so as to make the guide vane 34 move in accordance with tilting of the gunning nozzle 2.
The water feeding pipe 21 which feeds water to the lining material powder is fitted on the outside of the vertical feeding pipe 16. The water feeding pipe 21 is connected with a rotary joint 36 (ref. Figure 2) in the driving chamber 6A. Water from a feeding hose 37 can be fed into the water feeding pipe 21 during rotating of the vertical feeding pipe 16. The water is introduced into the vertical feeding pipe 16 through injection holes 38a of a mouth piece 38 attached to the lower end of the water feeding pipe 21. The mouth piece 38 has, for instance, four injection holes 38a as shown in Figure 6. The direction of each - injection hole 38a may be radial as shown in Figure 6 or tangential as shown in Figure 7. The latter example has an advantage that, as the lining material and the water whirl, the sludgy lining material becomes more homogeneous.
7~
A bracket 39 shown in Figure 4 is attached to the nozzle base 2A and a rod 40 is connected wlth the bracket 39.
The rod 40 is connected with a cylindrical slider 41 fitted on the outside of the water feeding pipe 21. Arms 44 supported by a fulcrum 43 are pitched by a hydraulic actuator 42 shown in Figure 3 and are provided on both sides of the vertical feeding pipe 16 as shown in Figure 8. The cylindrical slider 41 is moved vertically by the pitching of the arms 44. A stabilizer 45 is attached to -the vertical feeding pipe 16 in the air chamber 6B in order to avoid swinging of the vertical feeding pipe 16. The stabilizer 45 consists of four rollers 46, four roller holders 47 and a disc 48 as shown in Figure 9. The rollers 46 roll on a liner 49 inslde the air chamber 6B so that the vertical feeding pipe 16 and the watex feeding pipe 21 are always kept substantially at the center of the air chamber 6B.
Two rods 50 for tilting of the gunning nozzle are disposed as shown in Figure 9 in order to avoid the interfering of the cylindrical slider 41 and the stabilizer 45. As shown in Figuxe 10, these rods 50 are connected with a slider 51 fitted on the outer barreled shaft 22. The slider 51 is moved along a guide 54 (ref.
Figure 11) attached to the outer barreled shaft 22 in accordance with the vertical movement of an outer ring 53 connected with rods 52. The outer ring 53 is fitted in an annular groove 55 formed on the slider 51 and is free from the rotating of vertical feeding pipe 16. When the rods 52 are moved vertically by the pitching of the arms 44, the slider 51 and the rods 50 are moved vertically. As the cylindrical slider 41 is moved, the gunning nozzle 2 is tilted around the nozzle supportex 28A.
Around the articular joint 28, a heat shield 56 always covers the nozzle supporter 28A without interfering the tilting of the gunning nozzle 2. The heat shield 56 prevents the sludgy lining material from solidifying by the radiant heat. To facilitate smooth tilting of -the gunning nozzle 2 and to maintain the tilting angle, a balancer 57 is attached to the nozzle supporter 28A on the side opposite to the bracket 39.
Cooling air is fed to the nozzle carrier 6 to protect the driving chamber 6A from heat. An air pipe 59 is branched from the main pipe 58 in the shifting arm 5 as shown in Figure 12. The air pipe 59 is so branched as to be able to feed the air to the upper part and the lower part of the driving chamber 6A individually. Holes 61 for the rods 52 are opened in the base plate 17 as shown in Figure 10.
As the air flows from the driving chamber 6A into the air chamber 6B through the holes 61, the air in the driving chamber 6A is always refreshed. The air through another air pipe 60 is directly introduced into the air chamber 6B.
~0 As shown in Figure 3, the air pipe 60 branches off two pipes 62 and 65 in the water jacket 15. The pipe 62 is communicated with an upper annular chamber 64 having air outlets 63 and the other pipe 65 is communicated with a lower annular chamber 67 having a number of air outlets 6 arranged peripherally.
An opening at the lower end of the air chamber 6B
is circular and a ringed gap 68 is formed between the opening wall and the cylindrical slider 41. Not only the air through air outlets 66 but also the air introduced into the air chamber 6B from the driving chamber 6A is blown downward through the ringed gap 68. The blown air cools -the ~eLT~27~
surroundings of the vertical feeding pipe 16 exposed out of the nozzle carrier 6. In order to make the air floT~7 in the air chamber 6B smooth, it is preferable the air chamber 6B is hollow. If a bearing system for the vertical feediny pipe 16 was provided in the air chamber 6s, it would obstruct the aix flow. Therefore, the stabilizer 45 with yood ventilation as described previously is employed. The air pipe 60 exposed out of the nozzle carrier 6 and a feeding tube 69 which feeds water to the water jacket 15 are covered with a heat shield 70.
When the operation of the hot gunning robot 1 is stopped to operate the electric furnace 3, the nozzle carrier 6 is retreated in an upright posture as shown in Figure 13. At first, the hydraulic actuator 8 is contracted and the link lOA
pitches to the direction of an arrow 71. The parallelogram links 7 are shifted to the position directly over the main pole 9 and the long shifting arm 5 is moved to the space over the side of the furnace. The main pole 9 is rotated by a driving device (not shown) and the gunning nozzle 2 is retreated from the furnace by the rotating of the shifting arm 5. The area occupied by the hot gunning robot 1 during housing is small and the space for installing any other incidental equipments can be maintained close by the electric furnace 3.
While scrap or the like are charged in the electric furnace 3 and are being refined,the lining 3a is eroded. Under the condition that melting heat still remains immediately - after the tapping, the lining material is spouted toward the worn portion of the furnace wall. When the lining material adheres to the lininy 3a, moisture is vaporized instantly and the lining material is solidified and the lining 3a is mended. When the hydraulic actuator 8 is extended as shown in Figure 1, the link lOA pitches down to the direction of an arrow 72 and shifting arm 5 is moved to the direction of t~e electric furnace 3. The p~-sture of the shifting arm 5 is parallel to the bending part 9a and the nozzle carrier 6 travels in an upright posture along the vertical center line of the furnace 3. In this view, -the dimensions of the parallelogram links 7 and the distance between the electric furnace 3 and the main pole 9 are determined. For instance, even if the distance between fulcra 11 and 13 of the link lOA
is 12 feet and the nozzle carrier 6 travels vertically 4 feet, the horizontal deviation of the nozzle carrier 6 from the center line may be within 1 inch. Therefore, when the gunning nozzle 2 is rotated by the rotation of the vertical feeding pipe 16, the distance between the outlet of the nozzle and the furnace walls substantially equal all around and the lining can be mended uniformly.
When the nozzle carrier 6 is positioned on the vertical center line of the furnace, the lining material powder is fed through the pneumatic transport pipe 20 and the water is fed through the feeding hose 37. The lining material is introduced into the lower end of the vertical feeding pipe 16 and the water from the water feeding pipe 21 is mixed with the lining material through the mouth piece 38.
By the pressure, for instance 72 lbs/insq, in the pneumatic transport pipe 20, the sludgy lining material is fed to the gunning nozzle 2 through the outlet port 30. The sludgy lining material is forcibly spouted from the outlet of nozzle - toward the lining 3a. Here, the lining material in the articular joint 28 is guided by the guide vanes 31 and 32. If the hydraulic actuator 42 is contracted and the rod 52 is moved downward, the gunning nozzle 2 is tilted downward as shown in Figure 14. As the cylindrical slider 41 is moved along the vertical feeding pipe 16, the pitching of the arms 44 can be converted into the perfect vertical movement so that the tilting angle of the gunning nozzle 2 is changed precisely corresponding to the extension of the hydraulic actuator 42.
When the hydraulic actuator 42 is extended and the rod 52 is moved upward, the gunning nozzle 2 takes substantially horizontal posture as shown in Figure 4. The nozzle casing 2B is swollen out as wide as the openiny of outlet port 30 and the nozzle casing 2B continues the edge of the guide vane 31. Therefore, stagnation of the lining material does not occur. As shown in Figure lS, if the nozzle casing 2C were not swollen out, the lining material 74 would stagnate in a recession 73. In the example shown in ~igure 5, the movable guide vane 34 guides the lining material smoothly into the gunning nozzle 2. Disturbance of the flow and the pressure rise of the lining material in the articular joint 28 are suppressed. The lining material does not leak out from the hole 33. As shown in Figure 16, flanges 75 are equipped on the vertical feeding pipe 16 and the nozzle base 2A is fitted to the flanges 75, therefore a labyrinth forms.
The sealing effect of the labyrinth also prevents the lining material from leaking out.
In order to rotate the gunning nozzle 2, the vertical feeding pipe 16 is rotated by the motor 25. The lining material from the pneumatic transport pipe 20 and the water from the feeding hose 37 are continuously fed through the rotary joints 19 and 36 respectively. The gunning nozzle 2 is rotated with the articular joint 28 by the rotating of the vertical feeding pipe 16.
When the gunning nozzle 2 travels downward, the hydraulic actuator 8 is further extended. As previously ~27~8~
described, the horizontal deviation due to the ve~tical movement of the nozzle carrier 6 is small enouyh to be neglected compared with the diameter of the furnace. If the arms 44 are pitched by the hydraulic actuator 42 and the slider 51 is moved vertically along the guide 54, the gunniny nozzle 2 is tilted around the nozzle supporter 28A. When mending the bottom of the furnace, the gunning nozzle 2 is tilted downward as shown by broken lines in Figure 1.
By instructing the portion to be mended to a control box 10 (not shown), the portion can be mended under the hot condition continuously, automatically and quickly.
If a feeding hose 76 which feeds the lining material is fitted along the parallelogram-links 7, the deflection or deformation of the feeding hose 76 decreases so that the fluctuation of the quantity of the spouted lining rnaterial is reduced.
When the cooling air is fed through the main pipe 58, the air from the air pipe 59 is spouted to the upper part and the lower part of the driving chamber 6A and is flowed 20 into the air chamber 6B through the holes 61 so that the driving chamber 6A is always cooled by fresh air~ The air from the air pipe 60 is spouted from the air outlets 63 and 66 of two annular chambers 64 and 67 respectively. The air is blown out of the nozzle carrier 6 through the ringed gap 68 and the air chamber 6B is also filled with fresh air.
A driving system and a bearing system for the vertical feeding pipe 16 are protected from the heat of the furnace. The undesired swing of the long vertical feeding pipe 16 in the air chamber 6B is prevented by the stabilizer 45 and the 30 rotating of the vertical feeding pipe 16 is allowed by the roller 46.
~7~ 9 After the lining is mended, the nozzle c~rrier 6 is retreated to the side of the furnace as shown in Figure 13 and shifting arm 5 is rotated around the main pole 9 and the gunning nozzle 2 is away from the furnace. In order to remove the lining material adhering to the inside of the vertical feeding pipe 16, compressed air is fed into the vertical feeding pipe 16 for several minutes and the lining material powder is discharged from the outlet of the gunning nozzle 2. After the air purge, cleaning water is fed into the water feeding pipe 21 and the cleaning water is injected into the gunning nozzle 2 through the injection holes 38a for several minutes. The sludgy lining material remaining in the articular joint 28 and the gunning nozzle 2 are washed out. Therefore, manpower and time for maintenance, inspection and cleaning are reduced.
Therefore, a lot of manpower and time for the exchanging nozzle are necessary.
In order to solve the problems of the exchanging for the gunning nozzles, for instance a swivel joint may be used for supporting the gunning nozzle. A swivel joint is attached to the lower end of the nozzle carrier to facilitate tilting of the gunning nozzle. The swivel joint has a swivel axis and a horizontal path is formed in a swivel shaft.
The sludgy lining material passes through from a vertical path to the horizontal path and to a tilted path. However, as the lining material has to pass through two sharp bends, pressure loss becomes large and walls of the pa~nes heavily worn by the lining material. Moreover, the sludgy lining material stagnates at the bends and choking in the pathes causes.
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration, a preferred embodiment thereof, and in which:
Figure 1 is a diagrammatic illustration showing a hot gunning robot of the present invention installed close by an electric furnace;
Figure 2 is a sectional view of the upper half of a nozzle carrier;
Figure 3 is a sectional view of the lower half of a nozzle carrier;
Figure 4 is a sectional view of -the lower end of , ~7~
the nozzle carrier and of a gunniny nozzlei Figure 5 is a sectional view of an articular joint wi-th a movable guide vane;
Figure 6 is a developed sectional view of a mouth piece of the E-E section in Figure 4;
Figure 7 is a sectional development of a mouth piece having tangential injection holes;
Figure 8 is a sectional view of the F-F section in Figure 3;
Figure g is a sectional view of the G-G section in Figure 3;
Figure 10 is a sectional view of the H-H section in Figure 3;
Figure 11 is a sectional view of the K-K section in Figure 10;
Figure 12 is a diagrammatic illustration of a cooling air system;
Figure 13 is a diagrammatic illustration of the hot gunning robot in the housing position;
Figure 14 is a sectional view of an a~ticular-joint when the gunning n~zzle is tilted downward;
Figure 15 is an illustration of stagnating of sludgy li.ning material which may occur if the base of a nozzle casing is not swollen out;
Figure 16 is a development of the M-M section in Figure 14;
Figure 17 is a diagrammatic illustration of a hot gunning machine of the prior art; and -` ~27~
Figure 18 is a sectional view of a swi~el joint.
A hot gunning robot 1 shown in Figure 1 briefly comprises:
a gunning nozzle 2 which spouts lining material toward a furnace lining;
a shifter 4 which makes the gunning nozzle 2 advance into and retreat from an electric furnace 3; and a nozzle carrier 6 attached to the tip of the shifting arm 5 which is a part of the shifter 4.
The shifter 4 transfers the gunning nozzle 2 from a housing position to a mending position and consists of parallelogram links 7 and a hydraulic actuator 8 therefor.
The base of the hydraulic actuator 8 is attached to a mainpole 9 disposed close by the electric furnace 3. The parallelogram links 7 consist of two links lOA and lOB, a bending part 9a formed at the tip of the mainpole 9 and the shifting arm 5. The links lOA and lOB are supported on fulcra 11 and 12 provided at both ends of the bending part 9a and fulcra 13 and 14 provided on the shifting arm 5 which is parallel to the bending part 9a. The link lOA is connected to a piston rod 8a so as to make pitching in accordance with the extension and contraction of the h~draulic actuator 8.
When the link lOA pitches, the shifting arm 5 of the parallelogram links 7 are moved keeping parallel to the inclination of the bending part 9a.
The nozzle carrier 6, whlch maintains an upright posture, is attached to the tip of the shifting arm 5. The nozzle carrier 6 is, for instance, a box structure as shown in Figures 2 and 3 and a water jacket 15 is provided all around in order to protect from radiant heat of the furnace during the mending operation. A vertical feeding pipe 16 is provided inside the water jacket 15 to feed lining material 7~ 9 powder. At the lower end of the ver-tical feeding pipe 16, the freely tilted gunniny nozzle 2 is attached as shown in Figure 4.
The nozzle carrier 6 is partitioned by a base plate 17, and the upper part of the nozzle carrier 6 forms a driving chamber 6A and the lower part an air chamber 6B.
The air chamber 6B is provided in order to prevent the heat of the furnace from influencing a driving system and a bearing system for rotating the long vertical feeding pipe 16.
The vertical feeding pipe 16 is connected with a pneumatic transport pipe 20 through a rotary joint 19 in the upper part of the driving chamber 6A and is held vertically by two bearings 18A and 18B. A water feeding pipe 21 and outer barreled shaft 22 are fitted doubly on the vertical feeding pipe 16 and a spur gear 23 is fixed to the outer barreled shaft 22. Another spur gear 27 is fixed to a driving shaft 26 driven by amotor 25 with a reducer 24.
The spur gears 23 and 27 are engaged with each other so that the vertical feeding pipe 16 can be rotated.
At the lower end of the vertical feeding pipe 16, an articular joint 28, which introduces the lining material into the ~unning nozzle 2 smoothly, is formed. In detail, a cylindrical nozzle supporter 28A with an inlet port 29 is communicated with the lower end of the vertical feeding pipe 16 as shown in Figure 4. A cylindrical nozzle base 2A
is fitted on the nozzle supporter 28A so as to facilitate tilting of the gunning nozzle 2. The articular joint 28 mentioned above consists of the nozzle supporter 28A and the nozzle base 2A. The nozzle supporter 28A has a wide angle outlet port 30 which feeds the sludgy lining material to the gunning nozzle 2.
~.~7~
The communication of the gunning nozzle 2 ~ith the vertical feeding pipe 16 is kept at any -tilting angle of the gunning nozzle 2. There are arc-shaped guide vanes 31 and 32 between the outlet port 30 and the inlet port 29. The nozzle casing 2B is swollen out and opened near the nozzle base 2A as same as the outlet port 30 in order to prevent the sludgy lining material from choking near the lower end of -the guide vane 31. A hole 33 is provided in the nozzle base 2A
so that the gunning nozzle 2 tllts without interfering with the vertical feeding pipe 16. In the example shown in Figure 5, the guide vane 34 is hinged near the inlet port 29.
The lower end of the guide vane 34 contacts with a projection 35 of the no~e casing 2B so as to make the guide vane 34 move in accordance with tilting of the gunning nozzle 2.
The water feeding pipe 21 which feeds water to the lining material powder is fitted on the outside of the vertical feeding pipe 16. The water feeding pipe 21 is connected with a rotary joint 36 (ref. Figure 2) in the driving chamber 6A. Water from a feeding hose 37 can be fed into the water feeding pipe 21 during rotating of the vertical feeding pipe 16. The water is introduced into the vertical feeding pipe 16 through injection holes 38a of a mouth piece 38 attached to the lower end of the water feeding pipe 21. The mouth piece 38 has, for instance, four injection holes 38a as shown in Figure 6. The direction of each - injection hole 38a may be radial as shown in Figure 6 or tangential as shown in Figure 7. The latter example has an advantage that, as the lining material and the water whirl, the sludgy lining material becomes more homogeneous.
7~
A bracket 39 shown in Figure 4 is attached to the nozzle base 2A and a rod 40 is connected wlth the bracket 39.
The rod 40 is connected with a cylindrical slider 41 fitted on the outside of the water feeding pipe 21. Arms 44 supported by a fulcrum 43 are pitched by a hydraulic actuator 42 shown in Figure 3 and are provided on both sides of the vertical feeding pipe 16 as shown in Figure 8. The cylindrical slider 41 is moved vertically by the pitching of the arms 44. A stabilizer 45 is attached to -the vertical feeding pipe 16 in the air chamber 6B in order to avoid swinging of the vertical feeding pipe 16. The stabilizer 45 consists of four rollers 46, four roller holders 47 and a disc 48 as shown in Figure 9. The rollers 46 roll on a liner 49 inslde the air chamber 6B so that the vertical feeding pipe 16 and the watex feeding pipe 21 are always kept substantially at the center of the air chamber 6B.
Two rods 50 for tilting of the gunning nozzle are disposed as shown in Figure 9 in order to avoid the interfering of the cylindrical slider 41 and the stabilizer 45. As shown in Figuxe 10, these rods 50 are connected with a slider 51 fitted on the outer barreled shaft 22. The slider 51 is moved along a guide 54 (ref.
Figure 11) attached to the outer barreled shaft 22 in accordance with the vertical movement of an outer ring 53 connected with rods 52. The outer ring 53 is fitted in an annular groove 55 formed on the slider 51 and is free from the rotating of vertical feeding pipe 16. When the rods 52 are moved vertically by the pitching of the arms 44, the slider 51 and the rods 50 are moved vertically. As the cylindrical slider 41 is moved, the gunning nozzle 2 is tilted around the nozzle supportex 28A.
Around the articular joint 28, a heat shield 56 always covers the nozzle supporter 28A without interfering the tilting of the gunning nozzle 2. The heat shield 56 prevents the sludgy lining material from solidifying by the radiant heat. To facilitate smooth tilting of -the gunning nozzle 2 and to maintain the tilting angle, a balancer 57 is attached to the nozzle supporter 28A on the side opposite to the bracket 39.
Cooling air is fed to the nozzle carrier 6 to protect the driving chamber 6A from heat. An air pipe 59 is branched from the main pipe 58 in the shifting arm 5 as shown in Figure 12. The air pipe 59 is so branched as to be able to feed the air to the upper part and the lower part of the driving chamber 6A individually. Holes 61 for the rods 52 are opened in the base plate 17 as shown in Figure 10.
As the air flows from the driving chamber 6A into the air chamber 6B through the holes 61, the air in the driving chamber 6A is always refreshed. The air through another air pipe 60 is directly introduced into the air chamber 6B.
~0 As shown in Figure 3, the air pipe 60 branches off two pipes 62 and 65 in the water jacket 15. The pipe 62 is communicated with an upper annular chamber 64 having air outlets 63 and the other pipe 65 is communicated with a lower annular chamber 67 having a number of air outlets 6 arranged peripherally.
An opening at the lower end of the air chamber 6B
is circular and a ringed gap 68 is formed between the opening wall and the cylindrical slider 41. Not only the air through air outlets 66 but also the air introduced into the air chamber 6B from the driving chamber 6A is blown downward through the ringed gap 68. The blown air cools -the ~eLT~27~
surroundings of the vertical feeding pipe 16 exposed out of the nozzle carrier 6. In order to make the air floT~7 in the air chamber 6B smooth, it is preferable the air chamber 6B is hollow. If a bearing system for the vertical feediny pipe 16 was provided in the air chamber 6s, it would obstruct the aix flow. Therefore, the stabilizer 45 with yood ventilation as described previously is employed. The air pipe 60 exposed out of the nozzle carrier 6 and a feeding tube 69 which feeds water to the water jacket 15 are covered with a heat shield 70.
When the operation of the hot gunning robot 1 is stopped to operate the electric furnace 3, the nozzle carrier 6 is retreated in an upright posture as shown in Figure 13. At first, the hydraulic actuator 8 is contracted and the link lOA
pitches to the direction of an arrow 71. The parallelogram links 7 are shifted to the position directly over the main pole 9 and the long shifting arm 5 is moved to the space over the side of the furnace. The main pole 9 is rotated by a driving device (not shown) and the gunning nozzle 2 is retreated from the furnace by the rotating of the shifting arm 5. The area occupied by the hot gunning robot 1 during housing is small and the space for installing any other incidental equipments can be maintained close by the electric furnace 3.
While scrap or the like are charged in the electric furnace 3 and are being refined,the lining 3a is eroded. Under the condition that melting heat still remains immediately - after the tapping, the lining material is spouted toward the worn portion of the furnace wall. When the lining material adheres to the lininy 3a, moisture is vaporized instantly and the lining material is solidified and the lining 3a is mended. When the hydraulic actuator 8 is extended as shown in Figure 1, the link lOA pitches down to the direction of an arrow 72 and shifting arm 5 is moved to the direction of t~e electric furnace 3. The p~-sture of the shifting arm 5 is parallel to the bending part 9a and the nozzle carrier 6 travels in an upright posture along the vertical center line of the furnace 3. In this view, -the dimensions of the parallelogram links 7 and the distance between the electric furnace 3 and the main pole 9 are determined. For instance, even if the distance between fulcra 11 and 13 of the link lOA
is 12 feet and the nozzle carrier 6 travels vertically 4 feet, the horizontal deviation of the nozzle carrier 6 from the center line may be within 1 inch. Therefore, when the gunning nozzle 2 is rotated by the rotation of the vertical feeding pipe 16, the distance between the outlet of the nozzle and the furnace walls substantially equal all around and the lining can be mended uniformly.
When the nozzle carrier 6 is positioned on the vertical center line of the furnace, the lining material powder is fed through the pneumatic transport pipe 20 and the water is fed through the feeding hose 37. The lining material is introduced into the lower end of the vertical feeding pipe 16 and the water from the water feeding pipe 21 is mixed with the lining material through the mouth piece 38.
By the pressure, for instance 72 lbs/insq, in the pneumatic transport pipe 20, the sludgy lining material is fed to the gunning nozzle 2 through the outlet port 30. The sludgy lining material is forcibly spouted from the outlet of nozzle - toward the lining 3a. Here, the lining material in the articular joint 28 is guided by the guide vanes 31 and 32. If the hydraulic actuator 42 is contracted and the rod 52 is moved downward, the gunning nozzle 2 is tilted downward as shown in Figure 14. As the cylindrical slider 41 is moved along the vertical feeding pipe 16, the pitching of the arms 44 can be converted into the perfect vertical movement so that the tilting angle of the gunning nozzle 2 is changed precisely corresponding to the extension of the hydraulic actuator 42.
When the hydraulic actuator 42 is extended and the rod 52 is moved upward, the gunning nozzle 2 takes substantially horizontal posture as shown in Figure 4. The nozzle casing 2B is swollen out as wide as the openiny of outlet port 30 and the nozzle casing 2B continues the edge of the guide vane 31. Therefore, stagnation of the lining material does not occur. As shown in Figure lS, if the nozzle casing 2C were not swollen out, the lining material 74 would stagnate in a recession 73. In the example shown in ~igure 5, the movable guide vane 34 guides the lining material smoothly into the gunning nozzle 2. Disturbance of the flow and the pressure rise of the lining material in the articular joint 28 are suppressed. The lining material does not leak out from the hole 33. As shown in Figure 16, flanges 75 are equipped on the vertical feeding pipe 16 and the nozzle base 2A is fitted to the flanges 75, therefore a labyrinth forms.
The sealing effect of the labyrinth also prevents the lining material from leaking out.
In order to rotate the gunning nozzle 2, the vertical feeding pipe 16 is rotated by the motor 25. The lining material from the pneumatic transport pipe 20 and the water from the feeding hose 37 are continuously fed through the rotary joints 19 and 36 respectively. The gunning nozzle 2 is rotated with the articular joint 28 by the rotating of the vertical feeding pipe 16.
When the gunning nozzle 2 travels downward, the hydraulic actuator 8 is further extended. As previously ~27~8~
described, the horizontal deviation due to the ve~tical movement of the nozzle carrier 6 is small enouyh to be neglected compared with the diameter of the furnace. If the arms 44 are pitched by the hydraulic actuator 42 and the slider 51 is moved vertically along the guide 54, the gunniny nozzle 2 is tilted around the nozzle supporter 28A. When mending the bottom of the furnace, the gunning nozzle 2 is tilted downward as shown by broken lines in Figure 1.
By instructing the portion to be mended to a control box 10 (not shown), the portion can be mended under the hot condition continuously, automatically and quickly.
If a feeding hose 76 which feeds the lining material is fitted along the parallelogram-links 7, the deflection or deformation of the feeding hose 76 decreases so that the fluctuation of the quantity of the spouted lining rnaterial is reduced.
When the cooling air is fed through the main pipe 58, the air from the air pipe 59 is spouted to the upper part and the lower part of the driving chamber 6A and is flowed 20 into the air chamber 6B through the holes 61 so that the driving chamber 6A is always cooled by fresh air~ The air from the air pipe 60 is spouted from the air outlets 63 and 66 of two annular chambers 64 and 67 respectively. The air is blown out of the nozzle carrier 6 through the ringed gap 68 and the air chamber 6B is also filled with fresh air.
A driving system and a bearing system for the vertical feeding pipe 16 are protected from the heat of the furnace. The undesired swing of the long vertical feeding pipe 16 in the air chamber 6B is prevented by the stabilizer 45 and the 30 rotating of the vertical feeding pipe 16 is allowed by the roller 46.
~7~ 9 After the lining is mended, the nozzle c~rrier 6 is retreated to the side of the furnace as shown in Figure 13 and shifting arm 5 is rotated around the main pole 9 and the gunning nozzle 2 is away from the furnace. In order to remove the lining material adhering to the inside of the vertical feeding pipe 16, compressed air is fed into the vertical feeding pipe 16 for several minutes and the lining material powder is discharged from the outlet of the gunning nozzle 2. After the air purge, cleaning water is fed into the water feeding pipe 21 and the cleaning water is injected into the gunning nozzle 2 through the injection holes 38a for several minutes. The sludgy lining material remaining in the articular joint 28 and the gunning nozzle 2 are washed out. Therefore, manpower and time for maintenance, inspection and cleaning are reduced.
Claims (8)
1. A hot gunning robot for furnace lining com-prising :
a shifting arm to which a nozzle carrier is at-tached;
parallelogram-links which moves said shifting arm in a constant orientation ;
a vertical feeding pipe which rotates horizon-tally in said nozzle carrier and feeds lining ma-terial;
a cylindrical nozzle supporter with an inlet port communicated with the lower end of said verti-cal feeding pipe; and a tiltable gunning nozzle which has a nozzle base fitted on said cylindrical nozzle supporter.
a shifting arm to which a nozzle carrier is at-tached;
parallelogram-links which moves said shifting arm in a constant orientation ;
a vertical feeding pipe which rotates horizon-tally in said nozzle carrier and feeds lining ma-terial;
a cylindrical nozzle supporter with an inlet port communicated with the lower end of said verti-cal feeding pipe; and a tiltable gunning nozzle which has a nozzle base fitted on said cylindrical nozzle supporter.
2. A hot gunning robot for furnace lining as set forth in claim 1, wherein said cylindrical nozzle supporter has an outlet port with a wide angle and guide vanes provided between said outlet port and said inlet port.
3. A hot gunning robot for furnace lining as set forth in claim 2, wherein a nozzle casing of said gunning nozzle is swollen out and opened near the nozzle base as wide as said outlet port
4. A hot gunning robot for furnace lining as set forth in claim 2, wherein said guide vane is hinged near said inlet port and are moved in accor-dance with tilting of said gunning nozzle.
5. A hot gunning robot for furnace lining as set forth in claim 1, including :
a water feeding pipe which is fitted on the outside of said vertical feeding pipe in order to feed water to lining material powder;
a rotary joint and a mouthpiece, which are at-tached to said vertical feeding pipe, are communi-cated with said water feeding pipe; and injection holes formed in said mouthpiece, through which water is fed into said gunning nozzle.
a water feeding pipe which is fitted on the outside of said vertical feeding pipe in order to feed water to lining material powder;
a rotary joint and a mouthpiece, which are at-tached to said vertical feeding pipe, are communi-cated with said water feeding pipe; and injection holes formed in said mouthpiece, through which water is fed into said gunning nozzle.
6. A hot gunning robot for furnace lining as set forth in claim 1, including :
piching arms which are provided in said nozzle carrier ;
a cylindrical slider which is fitted on said vertical feeding pipe and is moved vertically by said arms ; and said cylindrical slider and a bracket provided on said nozzle base, which are connected together by a rod.
piching arms which are provided in said nozzle carrier ;
a cylindrical slider which is fitted on said vertical feeding pipe and is moved vertically by said arms ; and said cylindrical slider and a bracket provided on said nozzle base, which are connected together by a rod.
7. A hot gunning robot for furnace lining as set forth in claim 1, wherein said nozzle carrier comprises a driving chamber and an air chamber ;
said driving chamber provide a driving system and a bearing system for said vertical feeding pipe ;
said air chamber provides a stabilizer which is attached to said vertical feeding pipe in order to preventing said pipe from swinging.
said driving chamber provide a driving system and a bearing system for said vertical feeding pipe ;
said air chamber provides a stabilizer which is attached to said vertical feeding pipe in order to preventing said pipe from swinging.
8. A hot gunning robot for furnace lining as set forth in claim 7, wherein said air chamber com-rises annular chamber with air outlets arranged pe-ripherally.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61-5481 | 1986-01-17 | ||
| JP548186U JPS62117497U (en) | 1986-01-17 | 1986-01-17 | |
| JP61-5483 | 1986-01-17 | ||
| JP548386U JPS62117499U (en) | 1986-01-17 | 1986-01-17 | |
| JP61-5482 | 1986-01-17 | ||
| JP1986005480U JPS62117496U (en) | 1986-01-17 | 1986-01-17 | |
| JP61-8750 | 1986-01-17 | ||
| JP61008750A JPS62166285A (en) | 1986-01-17 | 1986-01-17 | Method of washing spray nozzle of internal insulation for hot repair |
| JP61-5480 | 1986-01-17 | ||
| JP548286U JPS62117498U (en) | 1986-01-17 | 1986-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1274869A true CA1274869A (en) | 1990-10-02 |
Family
ID=27518605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000527418A Expired - Lifetime CA1274869A (en) | 1986-01-17 | 1987-01-15 | Hot gunning robot for furnace lining |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR910009505B1 (en) |
| CA (1) | CA1274869A (en) |
| DE (1) | DE3639083A1 (en) |
| FR (1) | FR2593088B1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671295B1 (en) * | 1991-01-07 | 1995-04-07 | Franche Comte Alsace Etudes Te | ROBOT, IN PARTICULAR FOR WASHING. |
| NL9101939A (en) * | 1991-11-20 | 1993-06-16 | Meino Jan Van Der Woude | HYDRAULIC ROBOT SPRAY LANCE. |
| GB9311686D0 (en) * | 1993-06-05 | 1993-07-21 | Monocon Int Ltd | Vessel repair |
| FR2902028B1 (en) * | 2006-06-07 | 2008-11-14 | Jean Hourdebaigt | WATER EJECTION NOZZLE OF INDUSTRIAL WASHING ROBOT WITH PROGRAMMED ORIENTATION |
| AT508236A1 (en) | 2009-05-15 | 2010-11-15 | Tbr Engineering Metalltechnolo | DEVICE FOR WORKING IN A METALLURGICAL VESSEL |
| CN105855120B (en) * | 2016-06-07 | 2018-05-25 | 惠安康奥建材有限公司 | A kind of arc panel mopping device for building |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE497262A (en) * | ||||
| GB394145A (en) * | 1931-12-09 | 1933-06-22 | Wilhelm Braun | Improvements in or relating to pipe joints |
| US3473737A (en) * | 1966-03-09 | 1969-10-21 | Kaiser Aluminium Chem Corp | Apparatus for gunning refractory material having adjustable nozzle positioning means |
| DE2550946A1 (en) * | 1975-11-13 | 1977-05-18 | H Guenter Ziolkowski | Spray lance and spray method for refractory masses |
| DE2645292C2 (en) * | 1976-10-07 | 1982-09-02 | Fa. Adolf A. Fleischmann, 6000 Frankfurt | Slinger for lining industrial furnaces with refractory mass |
| JPS53108005A (en) * | 1977-02-04 | 1978-09-20 | Nippon Kokan Kk <Nkk> | Auotmatic stamping device for trough for molten pig iron |
| US4163546A (en) * | 1978-03-06 | 1979-08-07 | Morris John C | Apparatus for applying granular refractory material to surfaces |
| DE2848928C2 (en) * | 1978-11-08 | 1983-04-28 | VELCO Gesellschaft für Förder- und Silo-Anlagen mbH, 5620 Velbert | Device for repairing the lining of melting furnaces, ladles or the like. |
| EP0123758A1 (en) * | 1983-05-02 | 1984-11-07 | Aikoh Co. Ltd. | Method for the gunning of refractories |
| JPS60222164A (en) * | 1984-04-20 | 1985-11-06 | Tokico Ltd | Industrial robot |
-
1986
- 1986-08-25 KR KR1019860007045A patent/KR910009505B1/en not_active IP Right Cessation
- 1986-11-14 DE DE19863639083 patent/DE3639083A1/en active Granted
- 1986-12-29 FR FR868618288A patent/FR2593088B1/en not_active Expired
-
1987
- 1987-01-15 CA CA000527418A patent/CA1274869A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2593088B1 (en) | 1989-05-05 |
| KR870007642A (en) | 1987-08-20 |
| DE3639083C2 (en) | 1988-09-08 |
| DE3639083A1 (en) | 1987-08-13 |
| FR2593088A1 (en) | 1987-07-24 |
| KR910009505B1 (en) | 1991-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4690327A (en) | Hot gunning robot for furnace lining | |
| US3797745A (en) | Apparatus for spraying refractory lining | |
| CA1158762A (en) | Vertical gunning apparatus with television monitor | |
| US4253646A (en) | Hot blast-furnace-lining repairing apparatus | |
| CA1274869A (en) | Hot gunning robot for furnace lining | |
| US4272020A (en) | Gunning apparatus for in situ spraying of refractory material | |
| US4779798A (en) | Gunning apparatus | |
| US4211367A (en) | Gunning apparatus for in situ spraying of refractory material | |
| US4163546A (en) | Apparatus for applying granular refractory material to surfaces | |
| JPS6230132B2 (en) | ||
| JP5683609B2 (en) | Metallurgical reactor charging equipment | |
| GB2264999A (en) | Induction furnace for smelting and casting material in a non-reactive atmosphere | |
| US4421275A (en) | Apparatus for applying refractory material to refractory lined vessels | |
| ZA200701901B (en) | Distributor of hot feed material | |
| JPH0419472B2 (en) | ||
| US5923698A (en) | Method of operating an arc furnace, and an arc furnace | |
| US4494737A (en) | Lance for repairing the lining of steelmaking vessels | |
| US4032024A (en) | Apparatus for distribution of charge material in shaft furnaces, particularly high pressure blast furnaces | |
| CA1068468A (en) | Continuous casting apparatus with an articulative sealing connection | |
| FI96324C (en) | Device for transporting molten metal from a metallurgical furnace, especially a masung, to casting ladders | |
| CA1285770C (en) | Glass batch feed arrangement with directional adjustability | |
| JPS6356473B2 (en) | ||
| KR100289873B1 (en) | Apparatus for repairing fireproof lining of metallurgy containers | |
| KR101143385B1 (en) | Method for loading pourable material and device for carrying out said method | |
| JPS6237115Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |